Helicone vs Weights & Biases
Which Developer Tools AI tool is better in 2026?
Helicone
Helicone is an AI gateway and LLM observability platform that helps companies route, debug, and analyze their AI applications.
Weights & Biases
The AI developer platform
Side-by-side
| Helicone | Weights & Biases | |
|---|---|---|
| Tagline | Helicone is an AI gateway and LLM observability platform that helps companies route, debug, and analyze their AI applications. | The AI developer platform |
| Founded | — | 2018 |
| HQ | — | San Francisco, US |
| Employees | — | 500-1000 |
| Total funding | Undisclosed | $245M |
| Latest round | — | series-c · Oct 2023 |
| Valuation | — | $1B |
| Cheapest paid plan | Pro · $79/mo | — |
| Free plan | ✓ Hobby | ✗ |
| Free trial | ✓ | ✗ |
| Top tier price | Team · $799/mo | Enterprise · Contact sales |
| Pricing summary | 4 published plans | 1 published plans |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Helicone and Weights & Biases.
| Capability | Helicone | Weights & Biases |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | 1 (Python) |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✓ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Helicone
- Offers a free plan
- Offers a free trial
- Lower starting price ($79/mo)
🔵 Strengths of Weights & Biases
- Has raised more capital ($245M vs Undisclosed)
- Higher Neuron score (45 vs 12)
- Newer company (2018)
- Verified profile
Which should you choose?
Choose Helicone if price matters most — it starts at Free · From $79/mo, which is friendlier for teams watching burn. Both AI Developer Tools tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Weights & Biases if you want the most established option — it has raised $245M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Helicone vs Weights & Biases — which is better?
It depends on your priority. Helicone is the leaner option; Weights & Biases has broader feature depth. See the side-by-side table above.
Is Helicone cheaper than Weights & Biases?
Yes — Helicone's cheapest paid plan is Pro · $79/mo, while Weights & Biases's is Enterprise · Contact sales.
Do Helicone and Weights & Biases offer free plans?
Helicone: Yes, has a free plan. Weights & Biases: Paid only.
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